 Home > Products > Drilling Equipment > Tricone Bit > HT Series
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HT Series of Tricone Bit
- The bit bearing can be ball locked, bit with ball lock bearing can be adapts to
high rotary speed drilling well.
- The carbide compacts of high strength and high toughness was optimized, improve
the capability of anti-impact, decrease the ratio of break tooth.
- O rubber sealing ring is made of the more wear resistance high saturated buna-N
the compression capacity of sealing was optimized, increased the reliability of
the rubber sealing ring.
- New type of grease that can resist high temperature and low wearing is utilized.
Improve the integral capability of resist high temperature of sealing lubricate
system.
- Optimized compact numbers and the exposure height, rows, and special shaped compacts,
that play important role of cutting ability. The row of trimming tooth is added
between gage row and heel row compacts, the gage protection is enhanced, borehole
wall with rock stone ridges left by gage compacts and heel compacts can be trimmed,
abrasion wear on gage compacts and cone shell is reduced.
- All the rubber compensator is used which can limit pressure differential and prevent
drilling fluid from entering into the lubrication system and this provides the bearing
system with good condition of lubrication.
- HT series special gage protected steel tooth bit means special gage protection for
cone. For insert bit, a row of wedge trimmers is added between gage row and heel
row compacts, in addition to gage trimmers, the build up material and shape of steel
tooth are also improved. Furthermore, inverse radius tooth corner is used for increasing
buildup welding thickness, and composite hard facing material with better impact
resistance and crack resistance, wearing- resistant is used for buildup welding
on cone outside diameter.
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 Specifications:
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Bit size
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Inch (in)
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8 3/8
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8 1/2
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8 3/4
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9 1/2
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9 5/8
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9 3/4
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9 7/8
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12 1/4
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13 3/4
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Metric (mm)
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212.7
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215.9
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222.2
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241.3
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244.5
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247.3
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250.8
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311.1
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349.2
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Bit type
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117
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117
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117
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117
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117
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117
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117
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117
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117
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127
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127
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127
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127
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127
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127
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127
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127
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127
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API Regular Pin
(in)
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4 1/2
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6 5/8
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Recommended make-up torque for bit shank (KN.m)
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16.30-21.70
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37.93-43.30
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